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Boric acid
A product available in pharmacies on every corner. The acid penetrates deep into fabrics and removes even old, stubborn stains. Making homemade bleach is very simple: just take a few sachets of acid and dissolve them in ten liters of water. You have to wait for it to completely dissolve.
Powdered detergent and manganese solution.
You need to fill a bucket with hot water and pour about two hundred grams of washing powder into it. Next, you must dissolve several manganese crystals in a cup of old water. The liquid should turn pink. You have to stir the water for a long time so that the crystals dissolve completely. Otherwise they could leave stains on the objects.
Then pour the solution from the cup into a container with powder and stir. Then we put the contaminated white objects in a bucket with the prepared liquid and cover it with a bag. We wait for the water to cool and rinse things.
Things will turn white again, as if you bought them and never used them.